Revamping welcome of README.
Upgrading the 'Install' docs in the README.
Rewriting the quickstart guide.

Breaking it up into different sections, rewriting some wording, making the code
samples a bit more fun.
Revising the quickstart guide in the README to make it more developer friendly.

Merge branch 'feature/revise_quickstart' into development

* feature/revise_quickstart:
  Rewriting the quickstart guide.
  Upgrading the 'Install' docs in the README.
  Revamping welcome of README.